She said the only reason her gun was out in the first place was self-defense. She said she got the gun out after someone shot into her Frayser home.

According to Nellums, those shots barely missed her. That's when she came out with a gun and fired shots into the ground.

"I was trying to protect my children and my grandbabies, because they were there," Nellums said. "My mother was there. There was a lot of us there and they shot the house up."

She said she then put her gun back in the lockbox. The lockbox was unlocked though when her 3-year-old son grabbed the weapon. Police said the gun was left unattended on the living room table. Nellums said that is not true.

Fred Guttenberg, the father of Jaime Guttenberg, one of the 17 killed last week in Parkland, FL, pressed Sen. Marco Rubio on the role of guns and assault weapons in the shooting during a CNN town hall event on Wednesday, Feb. 21. (Source: CNN)

Senator Marco Rubio faced a barrage of tough questioning related to gun control and the shooting at Marjory Stoneman Douglas High School in Florida at a CNN town hall event on Wednesday.